Artigos 2016

Synthesis and characterization of metastable beta-Ag2WO4: an experimental and theoretical approach Abstract: Metastable silver tungstate (beta-Ag2WO4) has attracted much attention lately because of its many potential applications. However, the synthesis of metastable phases of inorganic compounds […]

Potential Barrier of (Zn,Nb)SnO2-Films Induced by Microwave Thermal Diffusion of Cr3+ for Low-Voltage Varistor Abstract: The effect of Cr3+ on the electrical properties of SnO2-based films deposited by electrophoresis on Si/Pt substrate was considered. The films […]

Toward the suppression of cellular toxicity from single-walled carbon nanotubes Abstract: In the multidisciplinary fields of nanobiology and nanomedicine, single-walled carbon nanotubes (SWCNTs) have shown great promise due to their unique morphological, physical and chemical properties. […]

Synthesis, antifungal evaluation and optical properties of silver molybdate microcrystals in different solvents: a combined experimental and theoretical study Abstract: In this study, we investigate the structure, antifungal activity, and optical properties of beta-Ag2MoO4 using […]

Ferroic properties of 0.675[Pb(Mg1/3Nb2/3)O-3]-0.325[PbTiO3]/CoFe2O4 prepared by spark plasma sintering Abstract: This paper reports the electric, magnetic and magnetoelectric properties of particulate composites of the system with ferroelectric phase 0.675[Pb(Mg1/3Nb2/3)O-3]-0.325[PbTiO3] and magnetic phase CoFe2O4 prepared by Spark […]

Relationship between the ferromagnetic phase and the magnetoelectric coupling in hot pressed Pb(Mg1/3Nb2/3)O-3-PbTiO3 based particulate composites Abstract:  The influence of ferromagnetic phase properties on the magnetoelectric response of hot pressed particulate composites formed by 80mol% of […]

Photoanodes on titanium substrates: one-step deposited BiVO4 versus two-step nano-V2O5 films impregnated with Bi3+ Abstract: One-step deposition of photoelectrochemically active BiVO4 (monoclinic) from a polyethylene glycol (PEG300) precursor paint onto titanium substrates is demonstrated to lead […]

Resistive switching controlled by the hydration level in thin films of the biopigment eumelanin Abstract: Melanins are biopigments ubiquitous in flora and fauna, exhibiting a range of interesting functional properties such as UV-Vis photoprotection, thermoregulation, hydration-dependent […]

Study on the structural and electrocatalytic properties of Ba2+- and Eu3+-doped silica xerogels as sensory platforms Abstract: This work reports on the sol-gel synthesis of barium- and europium-doped silica xerogel and its use as an electrocatalytic […]

Role of Cu, Ni and Co metals in the acidic and redox properties of Mo catalysts supported on Al2O3 spheres for glycerol conversion Abstract:  The combined acid-base and redox properties of active Cu, Ni and Co-promoted […]

Role of Dipolar Interactions and Volume Particle Size Distribution on the Nonmonotonic Magnetic Field Dependence of the Blocking Temperature in Magnetic Nanoparticles Abstract: The nonmonotonic behavior of the magnetic field dependence H of the superparamagnetic blocking […]

Thermal properties of the orthorhombic CaSnO3 perovskite under pressure from ab initio quasi-harmonic calculations Abstract: Structural, elastic and thermodynamic properties of the orthorhombic CaSnO3 perovskite are theoretically investigated at the ab initio level as a function […]

Photoluminescence and Photocatalytic Properties of Ag3PO4 Microcrystals: An Experimental and Theoretical Investigation Abstract: The structural, morphological, and optical properties of Ag3PO4 microcrystals were systematically characterized by using a combination of theoretical calculations and experimental techniques. These […]

NIR luminescence from erbium doped (100-x)SiO2:xZnO powders obtained by soft chemical synthesis Abstract: We present the structural and optical results of (100 – x)SiO2:xZnO compounds with x=0, 20, 40, 60, 80, and 100, containing 1 mol% […]

Tandem Long Distance Chain-Walking/Cyclization via RuH2(CO)(PPh3)(3)/Bronsted Acid Catalysis: Entry to Aromatic Oxazaheterocycles Abstract:  A novel route to 1,3-oxazaheterocycles based on cooperative RuH/Bronsted acid catalysis is reported. The use of the commercially available RuH2(CO)(PPh3)(3) complex allows for […]

Targeting neurotransmitter receptors with nanoparticles in vivo allows single-molecule tracking in acute brain slices Abstract: Single-molecule imaging has changed the way we understand many biological mechanisms, particularly in neurobiology, by shedding light on intricate molecular events […]

Photoluminescence emission in zirconium-doped calcium copper titanate powders Abstract: Intense photoluminescence (PL) emission was observed in Zr-doped calcium copper titanate powders. The compounds were synthesized by a soft chemical method and heat treated at temperatures between […]

Structural characterization and photoluminescence behavior of pure and doped potassium strontium niobates ceramics with tetragonal tungsten-bronze structure Abstract: KSr2Nb5O15 and K(1.2)Sr(1.6)Ln(0.2)Nb(5)O(15) (Ln = La, Pr, and Nd) were synthesized by the Pechini method and calcined at […]

Rietveld analysis of CaCu3Ti4O12 thin films obtained by RF-sputtering Abstract: Calcium copper titanate, CaCu3Ti4O12, CCTO, thin films with polycrystalline nature have been deposited by RF sputtering on Pt/Ti/SiO2/Si (100) substrates at a room temperature followed by […]

Synthesis of Main-Chain Poly(fullerene)s from a Sterically Controlled Azomethine Ylide Cycloaddition Polymerization Abstract:  Fullerene is used as a monomer in this simple method to prepare soluble, well-defined polymers. The sterically controlled azomethine ylide cycloaddition polymerization of […]

Simulation of interfacial pH changes during hydrogen evolution reaction Abstract: This work investigates the possibility of interfacial pH changes during a hydrogen evolution reaction using a finite elements simulation approach. This reaction is a common side […]

Understanding the dynamic magnetization process for the magnetoelectric effect in multiferroic composites Abstract:  Based on a magnetic relaxation model, an approach that includes the spin dynamics is proposed and applied to describe the magnetoelectric (ME) effect […]

Structural and quantitative analysis of a mature anaerobic biofilm on different implant abutment surfaces Abstract: Statement of problem. The longevity of dental implants depends on the absence of inflammation in the periimplant tissue. Similar to teeth, […]

Impact of Physical Chemical Characteristics of Abutment Implant Surfaces on Bacteria Adhesion Abstract: Surface attachment is the first step in biofilm formation, and the ability of bacteria to adhere to surfaces and develop a biofilm is […]

Optical and structural investigation of ZnO@ZnS core-shell nanostructures Abstract:  In the present work, are reported the experimental study of ZnO@ZnS core-shell synthesised by a microwave-assisted solvothermal (MAS) method. Some synthesis parameters such as, time, precursor concentration […]

Synthesis of Dihydroindolo[2,3-c]carbazole as Potential Telomerase Inhibitor Abstract: The dictyodendrins A-E were the first marine natural products that show inhibition of telomerase. A versatile and convergent route was described for the synthesis of derivatives of these […]

The ultra-precision U-d-lap grinding of flat advanced ceramics Abstract: The present study focuses on the U-d-lap grinding process and its machine-tool design aiming at ultra precision (UP) manufacturing of advanced ceramics. Impacts of three different overlapping […]

Penetration and trapping of the magnetic flux in planar defects of Bi1.65Pb0.35Sr2Ca2+xCu3+xOy superconductors Abstract: We have compared the dependence of the critical current density on maximum applied magnetic field, J(c)(0, H-am), performed in pellets with […]

Optimized Porous Anodic Alumina Membranes for Water Ultrafiltration of Pathogenic Bacteria (E. coli) Abstract: In this paper, we present the optimization of porous anodic alumina membranes for ultrafiltration prepared by anodically oxidized aluminum foils. The […]

Potentiometric detection of chemical species by spin-assisted assembly of vanadium pentoxide nanorods Abstract: Vanadium pentoxide nanorods (V2O5-nanorods) and poly(allylamine hydrochloride) (PAH) were assembled onto gold-coated substrates via spin-assisted assembly technique and used as a chemically […]

Simultaneous determination of Cd, Pb, and Cu in atmospheric particulate matter from different regions of the city of Presidente Prudente, Sao Paulo, Brazil Abstract: This article explores the assessment of atmospheric deposition, from the analysis of […]

Sintering and electrical conductivity of gadolinia-doped ceria Abstract: Bulk specimens of Ce0.9Gd0.1O2-delta prepared with powders within a range of specific surface area were sintered in oxidizing, inert, and reducing atmospheres. The aim of this work […]

Photodynamic inactivation of a multispecies biofilm using curcumin and LED light Abstract: This study evaluated the potential of curcumin-mediated antimicrobial photodynamic inactivation (API) on multispecies biofilms of Candida albicans, Candida glabrata, and Streptococcus mutans of […]

Spectroscopic Properties of pigment Li2-xZn1-xPrxTi3O8 Abstract: Inorganic compounds doped with rare earths (Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Gd (3+), Tb (3+), Tm3+) have been used in various applications including light-emitting devices such as fluorescent lamps, […]

Structural, electronic and photoluminescence properties of Eu3+-doped CaYAlO4 obtained by using citric acid complexes as precursors Abstract: The search for new materials that meet the current technological demands for photonic applications, make the Rare Earth […]

Synthesis and morphological transformation of BaWO4 crystals: Experimental and theoretical insights Abstract: BaWO4 crystals have been obtained by a co-precipitation method, and their structures were characterized by X-ray diffraction and Rietveld refinement techniques, while field emission […]

MAGABEIRA LATEX PRODUCTION EVALUATION IN CERRADO REGION OF GOIAS Abstract: The mangabeira latex, plant native from Cerrado, shows biotechnological potential for the development of new drugs. Little is known about the latex productivity and bleeding […]

Controlled synthesis of BiVO4 photocatalysts: Evidence of the role of heterojunctions in their catalytic performance driven by visible-light Abstract: Despite heterostructured semiconductors gaining attention as photocatalysts due to their improved activity compared to that of […]

One-pot sequential functionalizations of meso-tetrathienylporphyrins via Heck-Mizoroki cross-coupling reactions Abstract: Synthesis and sequential functionalizations of a new meso-tetraiodo(thien-2-yl)porphyrin and its Ni(II) derivative are described. The reactions for the preparation of these new porphyrins were optimized. […]

Cobalt Sulfide as Counter Electrode in p-Type Dye-Sensitized Solar Cells Abstract: We proposed a novel application of cobalt sulfide (CoS) in the configuration of transparent thin film as anode in p-type dyesensitized solar cell (p-DSC). The […]

White photoluminescence emission from ZrO2 co-doped with Eu3+, Tb3+ and Tm3+ Abstract: The search for high efficiency, reliable, low power consumption and environmental friendly materials for white light-emitting diodes has become a proficient field. Single-phase […]

Comparative study of bone tissue accelerated regeneration by latex membranes from Hevea brasiliensis and Hancornia speciosa Abstract: Bone loss is a common problem after accidental traumas, cancers, congenital defects, and surgical procedures. The techniques normally […]

Relationship between ferroelectric properties and local structure of Pb1-xBaxZr0.40Ti0.60O3 ceramic materials studied by X-ray absorption and Raman spectroscopies Abstract: This paper reports on the structural characterization of Pb1-xBaxZr0.40Ti0.60O3 (PBZT) ferroelectric ceramic compositions prepared by the conventional […]

Validation of a symphysis-fundal height chart developed for pregnancy complicated by diabetes and hyperglycemia: an observational study Abstract Background: The present study validates a symphysis-fundal height chart (SFH-chart) for pregnant women with type 2 diabetes […]

The interplay between Arrhenius and hopping conduction mechanisms in a percolating nanowire network Abstract: This study investigates the influence of different transport mechanisms on the conductance/resistance of devices based on percolating networks of semiconducting nanowires. […]

Understanding the fundamental electrical and photoelectrochemical behavior of a hematite photoanode Abstract: Hematite is considered to be the most promising material used as a photoanode for water splitting and here we utilized a sintered hematite […]

Effects of chemical substitution on the structural and optical properties of alpha-Ag2-2xNixWO4 (0 <= x <= 0.08) solid solutions Abstract: In this work, we investigated the effects of chemical substitution on the structural, electronic, and […]

Pesticide drift from aircraft applications with conical nozzles and electrostatic system Abstract: Despite all advances obtained with the pesticide use worldwide and in Brazilian agriculture, there is still a lack of technologies for agricultural aircrafts. […]

Novel Gd(OH)(3), GdOOH and Gd2O3 Nanorods: Microwave-Assisted Hydrothermal Synthesis and Optical Properties Abstract: We present a study of the controlled synthesis and optical properties of single-crystals Gd(OH)(3), GdOOH and Gd2O3 nanorods. In this work, Gd(OH)(3) […]

Solvent effects on the photoelectrochemical properties of WO3 and its application as dopamine sensor Abstract: Nanostructured WO3 films were produced by a simple method using ammonium tungstate dissolved in different solvents: ethanol, PEG 300, and […]

Theoretical and Experimental Insight on Ag2CrO4 Microcrystals: Synthesis, Characterization, and Photoluminescence Properties Abstract: Ag2CrO4 microcrystals were synthesized by means of the coprecipitation method without the use of a surfactant under three different conditions. On the […]

Metal-Catalyzed Cyclizations to Pyran and Oxazine Derivatives Abstract: Pyrans are privileged heterocyclic structures found in numerous natural compounds with extraordinary biological activities. The synthesis of these relevant structures has attracted a great deal of attention […]

On the morphology of BaMoO4 crystals: A theoretical and experimental approach Abstract: BaMoO4 crystals were obtained by a co-precipitation method, and their structures were characterized by X-ray diffraction and Rietveld refinement techniques. Field emission scanning […]

Recycling of construction and demolition waste for producing new construction material (Brazil case-study) Abstract: Construction and demolition waste corresponds to 50% of all urban solid waste, usually it is dumped in improper places. This work […]

Schottky contacts in germanium nanowire network devices synthesized from nickel seeds Abstract: This paper presents reliable process to the synthesis of germanium nanowires by the vapor-liquid-solid method using nickel as an alternative catalyst to gold, […]

Single nanoparticle tracking of N-methyl-D-aspartate receptors in cultured and intact brain tissue Abstract: Recent developments in single-molecule imaging have revealed many biological mechanisms, providing high spatial and temporal resolution maps of molecular events. In neurobiology, […]

Spatial and Structural Metrics for Living Cells Inspired by Statistical Mechanics Abstract: Experimental observations in cell biology have advanced to a stage where theory could play a larger role, much as it has done in […]

Nb2O5 hole blocking layer for hysteresis-free perovskite solar cells Abstract: Perovskite solar cells have attracted attention due its high conversion efficiency and low cost. In this work, Nb2O5 is used as, an alternative compact hole […]

Photoelectrocatalytic properties of BiVO4 prepared with different alcohol solvents Abstract: BiVO4 has been receiving attention for applications in photoelectrochemical devices. This paper describes the effect of different alcohol solvents (ethanol, ethylene-glycol, PEG300 and PEG 400) […]

Structural, optical, magnetic, ferroelectric, and piezoelectric properties of (Pb,Ba)(Ti,Fe)O-3 perovskites: a macroscopic and nanoscale properties approach Abstract: Single-phase Pb0.50Ba0.50Ti1-xFexO3 (PBTF) polycrystalline thin films with different Fe doping contents were prepared on Pt/Ti/SiO2/Si substrates using a chemical […]

Printable ReRAM devices based on the non-stoichiometric junction CuS/Cu2-xS Abstract: Hereby a novel thin film-based configuration of redox resistive switching memory (ReRAM) based on cheap and abundant copper sulphide (CuS) is reported. The devices working […]

Optical and structural study of electrodeposited zinc selenide thin films Abstract: This paper reports a study of the electrodeposition of ZnSe on Pt electrodes in a sulfuric acid solution at pH 2.0 with the purpose […]

Photoelectrochemical removal of 17 beta-estradiol using a RuO2-graphene electrode Abstract: A new electrode for the photoelectrochemical removal of 17 beta-estradiol from water using ruthenium oxide nanoparticles supported on reduced graphene oxide is proposed in this study. […]

Role of morphological characteristics on the conductive behavior of LaNiO3 thin films Abstract: LaNiO3 (LNO) thin films were synthesized via the polymeric precursor method and sintered using conventional and microwave heating sources. The samples were […]

Novel insights on the physicochemical properties of eumelanins and their DMSO derivatives Abstract: The biopigment eumelanin, ubiquitous in flora and fauna, is made up of chemically heterogeneous macromolecules based on the 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid […]

Study of structural and optical properties of CaMoO4 nanoparticles synthesized by the microwave-assisted solvothermal method Abstract: Calcium molybdate (CaMoO4) nanoparticles were synthesized by using a rapid assisted-microwave solvothermal method. X-ray diffraction measurements, Fourier transform Raman and […]

NiMoS HDS catalysts – The effect of the Ti and Zr incorporation into the silica support and of the catalyst preparation methodology on the orientation and activity of the formed MoS2 slabs Abstract: HDS NiMo catalyst […]

Optical and transport properties correlation driven by amorphous/crystalline disorder in InP nanowires Abstract: Indium phosphide nanowires with a single crystalline zinc-blend core and polycrystalline/amorphous shell were grown from a reliable route without the use of hazardous […]

Microwave Assisted Combustion Synthesis and Characterization of Nanocrystalline Nickel-doped Cobalt Ferrites Abstract: Nanoparticles nickel-doped cobalt ferrites [NixCo1-xFe2O4 (x = 0.0, 0.25, 0.50, 0.75 and 1.0 of Ni2+)] were prepared by the microwave combustion synthesis, using a […]

Short-range structure and photoluminescent properties of the CaTiO3:Pr,La phosphor Abstract: Pr3+-doped CaTiO3 perovskite is a promising phosphor compound with the possibility of use in several technological applications. In this paper, we report the substitution of Ca2+ […]

Pristine cardanol as biobased dopant for polyaniline Abstract: Cardanol is a well-known natural phenol bearing a long aliphatic chain. It is obtained from cashew nut shell liquid, a cheap and abundant by-product of the cashew industry. […]

Structural, Electronic, Vibrational, and Topological Analysis of Single-Walled Zinc Oxide Nanotubes Abstract: Single-walled armchair and zigzag ZnO nanotubes (SWZnONTs) have been studied via periodic computational simulations based on density functional theory with the B3LYP, HSE06, PBE0, […]

Reduced graphene oxide enhancing the photoelectrochemical properties of poly(3-hexylthiophene) Abstract: Poly(3-hexylthiophene) has been used in different photoelectrochemical devices as active material. However, its efficiency regarding photo-conversion is low and the coupling with a second compound is […]

Catalyst free vapor-solid deposition of morphologically different beta-Ga2O3 nanostructure thin films for selective CO gas sensors at low temperature Abstract: In the present work, we have demonstrated the deposition of novel morphologically different beta-Ga2O3 nanostructure (rod […]

Near-surface solution pH measurements during the pitting corrosion of AISI 1020 steel using a ring-shaped sensor Abstract: This work presents the development and characterization of a ring-shaped sensor built around a steel sample (AISI 1020) to […]

Tracking iron oxide nanoparticles in plant organs using magnetic measurements Abstract: Common bean plants were grown in soil and irrigated with water solutions containing different concentrations of Fe3O4Fe3O4 nanoparticles (NPs) with a mean diameter close to 10 nm. No […]

Spectroscopy and electronic structure of Sr2YRuO6 and Sr2YRu0.75Ir0.25O6 Abstract: We study the electronic structure of the Sr2YRuO6 and Sr2YRu0.75Ir0.25O6 compounds using x-ray (resonant) photoemission and absorption spectroscopies. The experimental results are interpreted with first-principles calculations, which […]

Pristine and Al-doped hematite printed films as photoanodes of p-type dye-sensitized solar cells Abstract: We hereby propose a non-expensive method for the deposition of pure and Al-doped hematite photoanodes in the configuration of thin films for […]

Choice of hybrid functional and basis set optimization to calculate the structural, electronic, mechanical, and vibrational properties of BaSnO3 Abstract: This work aimed to study the influence of seven hybrid functionals (B3LYP, B1WC, B3PW, PBE0, PBESOL0, […]

Mechanistic study of the formation of multiblock pi-conjugated metallopolymer Abstract: In this study, the mechanical behaviors, adhesive properties and water absorption of networks based on diglycidyl ether of bisphenol A (DGEBA) modified with diepoxy aliphatic […]

Highly dense and textured superconducting (Bi,Pb)(2)Sr2Ca2Cu3O10+delta ceramic samples processed by spark-plasma texturing Abstract: Consolidated powders of the superconducting cuprate Bi1.65Pb0.35Sr2Ca2Cu3O10+δ(Bi-2223) by the spark-plasma texturing (SPT), spark-plasma sintering (SPS), and the traditional solid-state reaction method were investigated by several techniques […]

Dynamic and structural correlations in nanocomposites of silica with modified surface and carboxylated nitrile rubber Abstract: The sintering process of compacts of nanostructured gadolinia-doped ceria was investigated by dilatometry and by construction of the master […]

Anomalous temperature behavior of resistance in C1-xCox thin films grown by pulsed laser deposition technique Abstract: We study the transport properties of C1−xCox th00in films (with x = 0.1, 0.15 and 0.2) grown on Si […]

Optimization of electrochemical capacitor stability of poly(o-methoxyaniline)-poly(3-thiophene acetic acid) self-assembled films Abstract: In the development of supercapacitors and rechargeable batteries based on conducting polymers, the stability of the material is an important concern. The objective of […]

Layer-by-layer thin films of polyaniline alternated with natural rubber and their potential application as a chemical sensor Abstract: Self-assembled films of polyaniline (PAni) alternated with natural rubber (NR) were successfully produced by layer-by-layer self-assembly technique (LbL), […]

YBCO ceramic nanofibers obtained by the new technique of solution blow spinning Abstract: This study proposes a novel solution blow spinning technique (SBS) for fabricating YBCO ceramic nanofibers. The precursor solutions were obtained from Y, Ba, […]

In situ characterization of naphthenic corrosion of API 5L X70 steel at room temperature Abstract: Different in situ coupled techniques were used to characterize the naphthenic corrosion of API 5L X70 steel at room temperature. […]

On the Model Performance of Composite CO2 Separation Membranes Abstract: A simple model on the performance of composite CO2 separation membranes (ceramic oxide-ion conductor and molten alkaline carbonates) is derived from an equivalent circuit comprising […]

Electrochromic properties of poly(o-methoxyaniline)-poly (3-thiophene acetic acid) layer by layer films Abstract: In this work, a new material was developed to be used as the active electrode in an electrochromic device based on layer-by-layer poly(o-methoxyaniline) and poly(3-thiopheneacetic acid) […]

Spin dynamics and two-dimensional correlations in the fcc antiferromagnetic Sr2YRuO6 Abstract: The face-centered-cubic (fcc) lattice of Ru5+ spins in the double perovskite Sr2YRuO6 shows a delicate, three-dimensional antiferromagnetic (AFM) ground state composed of stacked square AFM […]

Formation and composition of adsorbates on hydrophobic carbon surfaces from aqueous laccase-maltodextrin mixture suspension Abstract: A robust procedure for the surface bio-functionalization of carbon surfaces was developed. It consists on the modification of carbon materials in […]

In situ microwave-enhanced electrochemical reactions at stainless steel: Nano-iron for aqueous pollutant degradation Abstract: Iron nanoparticle deposition and stripping are observed from aqueous Fe2 + solution at pH 3 on stainless electrodes in the presence of focused microwave activation. The effects of […]

Um novo artigo científico foi publicado recentemente pelos pesquisadores J.E.F.S. Rodrigues, P.J. Castro, P.S. Pizani, W.R. Correr, A.C. Hernandes do CDMF no periódico “Ceramics International” (Ceramics International Volume 42, Issue 16, December 2016, Pages 18087–18093). […]

Writers: R. M. Batista; E. N. S. Muccillo Keywords: TG; DRX; Ceria; Dilatometry; Sintering Abstract: The sintering process of compacts of nanostructured gadolinia-doped ceria was investigated by dilatometry and by construction of the master sintering curve. Corrections for the thermal expansion of the experimental setup and mass […]

Writers: M. Congiu, F. Decker, D. Dini 2, C. F. O. Graeff Keywords: SILAR; Successive ionic layer adsorption and reaction; Dip coating; Electrodeposition; Open source; GNU equipment Abstract: A reliable and cheap equipment is hereby proposed for the deposition of thin […]

Writers: J.L. Clabel H. and V.A.G. Rivera and I.C. Nogueira and E.R. Leite and M. Siu Li and E. Marega Jr. Keywords: Luminescence; Erbium; Crystallization phases; Lifetime Abstract: This manuscript reports on the effects of the luminescence properties of Er3+ […]

Writers: Poliana Lima Rocha and Diego Augusto Batista Barbosa and José Renato de Oliveira Lima and Gilza Maria Piedade Prazeres and Carlos William de Araujo Paschoal and Maximo Siu Li and Elson Longo and Adeilton Pereira […]

Writers: S. Sergeenkov and L. Cichetto Jr. and J.C.C.A. Diaz and W.B. Bastos and E. Longo and F.M. Araújo-Moreira Keywords: Nickelates; Thin films; Pulsed laser deposition; Resistivity; Crossover Abstract: We demonstrate manifestation of some rather unusual size effects […]

Writers: E. Govea-Alcaide; I. García-Fornaris; P. A. Suzuki; R. F. Jardim Keywords: Bi-based cuprates; Grain boundaries Misorientation distribution; Transport relaxation Abstract: The impact of the grain boundary misorientation distribution (GBMD) on the intergranular voltage relaxation (V − t) curves at zero applied magnetic field in Bi1.65Pb0.35Sr2Ca2Cu3O10+δ(Bi-2223) ceramic […]

Writers: Agda E. Souza and Guilherme S. Sasaki and Sabrina A. Camacho and Silvio R. Teixeira and Maximo S. Li and Elson Longo Keywords: BZT; Photoluminescence; Defects; Charge transfer Abstract: In this work, BZT (Ba (ZrxTi1−x)O3), composite ceramic […]

Writers: P.P. Ortega and L.S.R. Rocha and C.C. Silva and M. Cilense and R.A.C. Amoresi and E. Longo and A.Z. Simões Keywords: A. Films; C. Electrical properties; C. Magnetic properties; E. Functional applications Abstract: Heterostructured thin films of […]

Writers: F. Rosales-Saiz and L. Pérez-Acosta and I.F. Machado and J.E. Pérez-Fernández and R.F. Jardim and E. Govea-Alcaide Keywords: Bi-based superconductor; Spark plasma sintering; Finite element method; Superconducting properties Abstract: The influence of different plungers/die materials for the […]

Writers: C. Aliotta and L.F. Liotta and V. La Parola and A. Martorana and E.N.S Muccillo and R. Muccillo and F. Deganello Keywords: Samarium doped ceria; IT-SOFC; Solution combustion synthesis; Sintering in reducing atmosphere; Reducibility Abstract: Ce0.8Sm0.2O2 − x powders […]

Writers: Luís F. Da Silva, Osmando F. Lopes, Ariadne C. Catto, Waldir Avansi, Jr., Maria I. B. Bernardi,  Máximo Siu Li, Caue Ribeiro and  Elson Longo Keywords: heterojunctions; nanostructured; photoluminescence; semiconductors Abstract: The use of nanostructured heterojunctions has been a promising option for hindering the […]

Writers: Kubo, Andressa M. and Gorup, Luiz F. and Amaral, Luciana S. and Filho, Edson R. and Camargo, Emerson R. Keywords: Gold; Nanoparticles; Morphological; Microtubules Abstract: Self-assembly of nanoparticles on living biotemplate surfaces is a […]

Writers: R.C. Gouveia and H. Kamimura and R. Munhoz and A.D. Rodrigues and E.R. Leite and A.J. Chiquito Keywords: Nanostructures; Semiconductors; Raman spectroscopy; Transport properties Abstract: Germanium nanowires have been synthesized by the well known vapor-liquid-solid growth mechanism […]

Writers: Yendry Regina Corrales Ureña, Paulo Noronha Lisboa-Filho, Michael Szardenings, Linda Gätjen, Paul-Ludwig Michael Noeske, Klaus Rischka Keywords: Laccase; Maltodextrin; Hydrophobic; Bio-functionalization; Carbon Abstract: A robust procedure for the surface bio-functionalization of carbon surfaces was […]

Writers: P. Francatto and F.N. Souza Neto and A.E. Nogueira and A.M. Kubo and L.S. Ribeiro and L.P. Gonçalves and L.F. Gorup and E.R. Leite and E.R. Camargo Keywords: Nanopowders; Wet-chemical synthesis; Reactive powder; Hydrogen peroxide Abstract: Bismuth […]

Writers: Ernesto C. Pereira and Angel Cuesta Keywords: electrochemical; modern societies Introduction: The fast growth of human population on planet Earth comes inevitably accompanied by the challenge of both maintaining the high living standards of developed countries, and […]

Writers: Luís F. da Silva and Ariadne C. Catto and Waldir Avansi Jr. and Laécio S. Cavalcante and Valmor R. Mastelaro and Juan Andrés and Khalifa Aguir and Elson Longo Keywords: Microwave-assisted hydrothermal; α-Ag2WO4; Nanorods; Abstract: This manuscript […]

Writers: M. F. S. Teixeira, M. M. Barsan and C. M. A. Brett Keywords: polymer; film Abstract: The construction of molecular nanostructures with tunable topological structures is a challenge in molecular engineering. We report a novel organic π-conjugated chromophore obtained […]

Writers: Hernandez-Wolpez, M; Martinez-Guerra, E; Jardim, RF; Mune, P Keywords: high-temperature superconductors; high-tc superconductors; lower critical-field; pure 2223 powders; semi-wet methods; magnetic-field; flux-creep; bi2-xpbxsr2ca2cu3oy compositions; grain-boundaries; rapid synthesis Abstract: The aim of this review is to give a […]

Writers: R.C. Deus and R.A.C. Amoresi and P.M. Desimone and F. Schipani and L.S.R. Rocha and M.A. Ponce and A.Z. Simoes and E. Longo Keywords: A. Films; B. Defects; C. Chemical properties; D. CeO2; E. Sensors Abstract: Here […]

Writers: Camila C. de Foggi; Ana L. Machado; Camila A. Zamperini; Darcy Fernandes; Amanda F. Wady; Carlos E. Vergani Keywords: acrylic resin; biofilm; Candida albicans; hydrophobicity; surface roughness Abstract Aim The aim of the present study was […]

A study approach on ferroelectric domains in BaTiO3 (Retracted article. See vol. 148, pg. 360, 2019) Abstract: Atomic Force Acoustic Microscopy (AFAM) and Piezoresponse Force Microscopy (PFM) were used to study local elastic and electromechanical […]

Writers: Camila R. Peverari and Diego N. David-Parra and Madalina M. Barsan and Marcos F.S. Teixeira Keywords: Electropolymerization; Metallopolymer; π-Conjugated polymer; Molecular columns; Molecular conductivity Abstract: Electropolymerization of a π-conjugated polymer from [N,N′-bis(salicylidene)-o-phenylenediamine]nickel(II) complex ([Ni(salophen)]) on the surface […]

Writers: D.B. Istuque and L. Reig and J.C.B. Moraes and J.L. Akasaki and M.V. Borrachero and L. Soriano and J. Payá and J.A. Malmonge and M.M. Tashima Keywords: Alkali-activated binder; Microstructure; Residue; X-ray techniques Abstract: In recent years, […]

Writers: Davi H.T. Amador and Heibbe C.B. de Oliveira and Julio R. Sambrano and Ricardo Gargano and Luiz Guilherme M. de Macedo Keywords:  Abstract: A prolapse-free basis set for Eka-Actinium (E121, Z = 121), numerical atomic calculations on E121, […]

Writers: Joshi, Nirav and da Silva, Luis F. and Jadhav, Harsharaj and M’Peko, Jean-Claude and Millan Torres, Bruno Bassi and Aguir, Khalifa and Mastelaro, Valmor R. and Oliveira, Osvaldo N. Keywords: gas sensor; ozone; oxide […]

Writers: Marco A. L. Cordeiro, Edson R. Leite, and Eric A. Stach Keywords: Nanoparticle; Structure Abstract: The tailoring of nanoparticle superlattices is fundamental to the design of novel nanostructured materials and devices. To obtain specific collective properties of these […]

Writers: Silvia Leticia Fernandes; Bruna Andressa Bregadiolli; Anna Christina Véron; Frank A. Nüesch; Maria Aparecida Zaghete; Carlos Frederico de Oliveira Graeff Keywords: solar cells; deposition method Abstract: CH3NH3PbI3 perovskite solar cells are one of the most exciting technologies in […]

Writers: Raissa Mendes Silva and Diego Augusto Batista Barbosa and Caritas de Jesus Silva Mendonça and José Renato de Oliveira Lima and Fernando Carvalho Silva and Elson Longo and Adeilton Pereira Maciel and Carlos William de […]

Writers: M. G. Ranieri; R. A. C. Amoresi; M. A. Ramirez; J. A. Cortes; L. S. R. Rocha; C. C. Silva; A. Z. Simões Keywords: Magnetic; Thin films Abstract: Thin films of BiFeO3 (BFO), LaFeO3 (LFO), and LFO/BFO heterostructures were successfully obtained on Pt/TiO2/SiO2/Si(100) substrates by chemical solution deposition. The films were characterized by structural, […]

Writers: Ariadne C. Catto, Luís F. da Silva, Maria Inês B. Bernardi, Sandrine Bernardini, Khalifa Aguir, Elson Longo, and Valmor R. Mastelaro Keywords: cobalt; gas sensor; ozone; XANES spectroscopy; XPS; zinc oxide Abstract: A detailed study of the […]

Writers: L.H. Oliveira and A.P. de Moura and F.A. La Porta and I.C. Nogueira and E.C. Aguiar and T. Sequinel and I.L.V. Rosa and E. Longo and J.A. Varela Keywords: Ceramics; Optical materials; Chemical synthesis; Microstructure; Defects […]

Writers: M.D. Gonçalves and Pardha S. Maram and A. Navrotsky and R. Muccillo Keywords: Proton conductor; Barium zirconate; Powder synthesis; Impedance spectroscopy Abstract: Yttrium-doped barium zirconate ceramic powders were synthesized by the oxidant peroxide method in air and […]

Writers: Osmair Vital de Oliveira and Luciano Tavares Costa and Edson Roberto Leite Keywords: Polymer nanocomposite; Solvent effect; Molecular dynamics simulation Abstract: Grafted polymer on nanoparticle is an efficient way to obtain/improve aggregation, solubility, form and size of […]

Writers: Joice Monaliza Vernini, Jusciéle Brogin Moreli, Roberto Antônio Araújo Costa, Carlos Antonio Negrato, Marilza Vieira Cunha Rudge and Iracema Mattos Paranhos Calderon Keywords: Adipokines; Pregnancy; Obesity; Insulin resistance; Hyperglycemia Abstract Background Maternal obesity is associated with several adverse pregnancy outcomes. This study was conducted aiming to evaluate maternal levels of adipokines and insulin in pregnancies complicated […]

Writers: Avansi, W. and Oliveira, C. L. P. and Ribeiro, C. and Leite, E. R. and Mastelaro, V. R. Keywords: nanostructures; X-ray Abstract: A detailed study on the morphological evolution of one-dimensional (1D) vanadium pentoxide (V2O5) […]

Writers: Freitas, R. G. and Lucas, F. W. S. and Santanna, M. A. and Mendes, R. A. and Terezo, A. J. and de Souza, G. L. C. and Mascaro, L. H. and Pereira, E. C. Keywords: […]

Writers: Amanda F. Gouveia and Mateus M. Ferrer and Júlio R. Sambrano and Juan Andrés and Elson Longo Keywords: energy; Wulff construction; Morphology; t-LaVO4 Abstract: In this communication, a systematic study of the surface structure, including energy management […]

Writers: Rabelo, Adriano C; Rosario, Adriane V; Trapp, Marília A; Filho, Edson Rodrigues; Forim, Moacir; Pereira, Ernesto C Keywords: Catalytic; Methyl; Orange; Platinum; TiO2 Abstract: A binary system composed of Pt clusters supported on TiO2 nanoparticles was prepared by Pechini Method and the […]

Writers: Joice Monaliza Vernini, Jusciele Brogin Moreli, Claudia Garcia Magalhães, Roberto Antônio Araújo Costa, Marilza Vieira Cunha Rudge and Iracema Mattos Paranhos Calderon Keywords: Obesity; Overweight; Pregnancy; Maternal outcomes; Perinatal outcomes Abstract Background Overweight and obesity are associated with pregnancy complications and adverse perinatal outcomes, posing short and long–term risks for maternal and child health. This study […]

Writers: Hasina H. Ramanitra, Simon A. Dowland, Bruna A. Bregadiolli, Michael Salvador, Hugo Santos Silva, Didier Bégué, Carlos F. O. Graeff, Heiko Peisert, Thomas Chassé, Sambatra Rajoelson, Andres Osvet, Christoph J. Brabec, Hans-Joachim Egelhaaf, Graham E. Morse, Andreas Distler and Roger C. Hiorns Keywords: polymer; photovoltaic cells; PCBM Abstract: The first oligomerisation of phenyl-C61-butyric acid […]

Writers: Roman A. Roca, Amanda F. Gouveia, Pablo S. Lemos, Lourdes Gracia, Juan Andrés, and Elson Longo Keywords: Nanoparticles; Synergetic Computational; Experimental Study Abstract: In the present work, a combined theoretical and experimental study was performed on the structure, […]

Writers: Lucas, FWD; Welch, AW; Baranowski, LL; Dippo, PC; Hempel, H; Unold, T; Eichberger, R; Blank, B; Rau, U; Mascaro, LH; Zakutayev, A Keywords: photovoltaic absorber; thin films; photoluminescence; solar cell Abstract: CuSbS2 is a promising nontoxic and earth-abundant photovoltaic […]

Writers: R. C. de Oliveira,  L. Gracia,   M. Assis,   M. Siu Li,  J. Andres,   E. Longo and   L. S. Cavalcante Keywords: crystals; electronic structure; optical properties Abstract: This work combines experimental and computational techniques to exploit the best of both methodologies […]

Writers: L. Pérez-Acosta and E. Govea-Alcaide and J.G. Noudem and I.F. Machado and S.H. Masunaga and R.F. Jardim Keywords: Cuprates superconductors; Texture; Spark-plasma; Anisotropy Abstract: Consolidated powders of the superconducting cuprate Bi1.65Pb0.35Sr2Ca2Cu3O10+δ (Bi-2223) by the spark-plasma texturing (SPT), […]

Writers: F.L. Zabotto and A.J. Gualdi and P.C. de Camargo and A.J.A. de Oliveira and J.A. Eiras and D. Garcia Keywords: Grain size effect; Magnetoelectric properties; PMN-PT; Ferroelectric Abstract: In this work, the influence of the grain coarsening […]

Writers: SILVA, R. S.; JESUS, L. M.; OLIVEIRA, T. C.; SAMPAIO, D. V.; SANTOS, J. C. A.; HERNANDES, Antônio Carlos. Keywords: Barium calcium titanate; Ferroelectric; Laser sintering; Translucent ceramics; Electro-optical devices Abstract: Multifunctional transparent ferroelectric ceramics […]

  Writers: Almeida, J. M. P. and Almeida, G. F. B. and Hernandes, A. C. and Mendonca, C. R. Keywords: Lead oxide Abstract: Lead oxide is an important glass modifier not only for affecting the […]

Writers: T.C. Porfirio and E.N.S. Muccillo Keywords: A. Sintering; C. Dielectric properties; D. Perovskites; E. Capacitors Abstract: The effects of small amounts of lithium fluoride sintering aid on the microstructure and dielectric properties of CaCu3Ti4O12 (CCTO) ceramics were […]

Writers: M. Congiu and O. Nunes-Neto and M.L. De Marco and D. Dini and C.F.O. Graeff Keywords: Copper sulphide; Solar energy; Counter-electrodes; Ferrocene; Dye solar cells; Abstract: In this work, the application of hexagonal CuS nanoparticle layers as […]

Writers: V.Z.C. Paes, J. Varalda, P. Schio, J.T. Matsushima, E.C. Pereira, A.J.A. de Oliveira and D.H. Mosca Keywords: magnetization; particles Abstract: Monte Carlo (MC) simulations of the magnetization states of disordered self-assembled arrays of particles consisting of Co87Cu13 alloy […]

Writers: Andrés Felipe Espinosa Pineda and Filiberto González Garcia and Alexandre Zirpoli Simões and Elson Longo da Silva Keywords: Epoxy adhesives; 316 L stainless steel; Lap shear; Cohesive fracture Abstract: In this study, the mechanical behaviors, adhesive properties […]

Writers: Marina Piacenti-Silva, Adriana Arruda Matos, João Vitor Paulin, Rafaela Alves da Silva Alavarce, Rodrigo Cardoso de Oliveira, Carlos FO Graeff Keywords: biocompatibility; melanin; polymer; bioelectronics Abstract: Biocompatibility tests were performed for melanin synthesized in water (W-Mel) and […]

Writers: Ilse Sodré Motta, Gustavo Tadeu Volpato, Débora Cristina Damasceno, Yuri Karen Sinzato, Giovana Vesentini, Cibele Vieira Cunha Rudge, Iracema Mattos Paranhos Calderon, Wilma De Grava Kempinas, Jon Ovid Odland, Marilza Vieira Cunha Rudge Keywords: Pesticides; Metals; Contamination; Pregnancy ABSTRACT PURPOSE: To evaluate the contamination index of metals and pesticides in pregnant women, and to relate […]

Writers: Komatsu, Daniel; Paranhos, Caio Márcio; Ruvolo-Filho, Adhemar Keywords: mechanical properties; nanocomposites; polyolefin; thermal properties; transmission electronic microscopy Abstract: Nanocomposites of linear low density polyethylene (LLDPE)/montmorillonite clay were obtained by diluting a masterbatch, containing 20.0% clay, in a twin screw […]

Writers: Kássia de Carvalho Dias and Paula Aboud Barbugli and Carlos Eduardo Vergani Keywords: Cell survival; Keratinocytes; HEPES; Candida albicans; Staphylococcus aureus Abstract: This study assessed the effect of the buffers 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) and 3-(N-morpholino) propanesulfonic acid […]

Writers: Aline Satie Takamiya and Douglas Roberto Monteiro and Daniel Galera Bernabé and Luiz Fernando Gorup and Emerson Rodrigues Camargo and João Eduardo Gomes-Filho and Sandra Helena Penha Oliveira and Debora Barros Barbosa Keywords: Biocompatibility; endodontic materials; […]

Writers: Juliane Maria GUERREIRO-TANOMARU; Fernando Antonio VÁZQUEZ-GARCÍA; Roberta BOSSO-MARTELO; Maria Inês Basso BERNARDI; Gisele FARIA; Mario TANOMARU FILHO Keywords: Physicochemical analysis; Biofilms; Enterococcus faecalis; Zirconium; Nanotechnology Abstract Objective Mineral Trioxide Aggregate (MTA) is a calcium silicate cement composed of Portland cement (PC) and bismuth oxide. Hydroxyapatite has been incorporated […]

Writers: Ivan Mouritys Pereira Silva and Gabriela Byzynski and Caue Ribeiro and Elson Longo Keywords: ZnO:N; Photocatalytic activity; Degradation mechanism Abstract: Zinc oxide (ZnO) presents vast applicability in different areas. Diverse chemical elements are used in doping ZnO in […]

Writers: Mayra D. Gonçalves, Flavio L. Souza, Elson Longo, Edson R. Leite, Emerson R. Camargo Keywords: PZT; Chemical synthesis; Dielectric response; Sintering; Ceramics Abstract: Highly reactive lead zirconate titanate powders (PZT) with different compositions were […]

Writers: Ricardo T. Kushikawa and Marcelo R. Silva and Antonio C.D. Angelo and Marcos F.S. Teixeira Keywords: Electrochemical sensor; Platinum nanoparticles; Voltammetric determination Abstract: In this paper, we report the construction of an electrochemical sensing platform based on […]

Writers: J.L. Clabel H. and F.A. Ferri and F.L. Zabotto and V.A.G. Rivera and I.C. Nogueira and D. Garcia and O.F. de Lima and E.R. Leite and M.A. Pereira-da-Silva and C.A. Cardoso Keywords: Dielectric properties; Magnetic properties; […]

Writers: Juliana Aparecida Delben; Chaiene Evelin Zago; Natalia Tyhovych; Simone Duarte; Carlos Eduardo Vergani Keywords: cell; structure; microorganism; biofilms Abstract: Considering the ability of atmospheric-pressure cold plasma (ACP) to disrupt the biofilm matrix and rupture cell structure, it can be an efficient tool […]

Writers: D. Berger, A.P. de Moura, L.H. Oliveira, W.B. Bastos, F.A. La Porta, I.L.V. Rosa, M.S. Li, S.M. Tebcherani, E. Longo, J.A. Varela Keywords: ZnO; Thin films; Pressure-assisted thermal annealing; Photoluminescence properties; Gas sensor properties […]

Writers: Breno Ebinuma Takiuti; Michael J. Brennan; Walter Katsumi Sakamoto; José Antônio Malmonge; Marcelo Ornaghi Orlandi Keywords: Structural health monitoring; Nanocomposite; Continuous sensors; Neural network; ITO Abstract: In order to secure the structural integrity of aeronautic structures, several structural health monitoring techniques have been studied throughout history. One of the most recent technologies […]

Writers: Pellissari, Claudia Viviane Guimaraes and Pavarina, Ana Claudia and Bagnato, Vanderlei Salvador and Mima, Ewerton Garcia de Oliveira and Vergani, Carlos Eduardo and Jorge, Janaina Habib Keywords: Cells; microorganisms; cytotoxicity Abstract: This study assessed the cytotoxicity of antimicrobial […]

Writers: S. Sergeenkov and C. Córdova and L. Cichetto Jr. and O.F. de Lima and E. Longo and F.M. Araújo-Moreira Keywords: Carbon-cobalt nanocomposite; Thin films; Resistance; Polaron hopping; Magnetic scattering Abstract: We study the transport properties of C1−xCox thin films (with […]

Writers: Wesley B.S. Machini and Marcos F.S. Teixeira Keywords: Bio-inspired sensor; Biomimetic; Doping analysis Abstract: A bio-inspired electrochemical sensor using a binuclear oxo-manganese complex was evaluated and applied in the detection of a substance associated with doping in […]

Writers: Zabotto, FL; Gualdi, AJ; de Oliveira, AJA; Eiras, JA; Garcia, D Keywords: Magnetoelectric composites, ferroelectric matrix effect, Tungsten-bronze ferroelectric Abstract: In this work, the influence of the ferroelectric phase on the magnetoelectric response of particulate magnetoelectric composites were investigated. […]

Writers: S.L. Reis and E.N.S. Muccillo Keywords: A: Sintering; C: Electrical conductivity; D: Perovskites; E: Fuel cells Abstract: La0.9Sr0.1Ga0.8Mg0.2O3−δ solid electrolytes were consolidated by fast firing aiming to investigate the effects of the sintering method on densification, microstructure […]

Writers: Isaltino A. Barbosa and Paulo C. de Sousa Filho and Douglas L. da Silva and Fabrício B. Zanardi and Lucas D. Zanatta and Adilson J.A. de Oliveira and Osvaldo A. Serra and Yassuko Iamamoto Keywords: Mesoporous […]

Writers: Lu
ıs F. da Silva, Osmando F. Lopes, Vagner R. de Mendonc
a, Kele T. G. Carvalho, Elson Longo, Caue Ribeiro and Valmor R. Mastelaro Keywords: nanoparticles; organic pollutants Abstract: Strontium titanate nanoparticles have attracted much attention due […]

Writers: Francisco W. B. Aquino, Caio M. Paranhos and Edenir R. Pereira-Filho Keywords: Polymer; Method Abstract: This study presents a procedure for direct Sb determination in solid e-waste samples (polymers). Polymer standards (acrylonitrile–butadiene–styrene (ABS) and polycarbonate (PC)/ABS) were mixed with dichloromethane […]

Writers: Maria T. Fabbro, Lourdes Gracia, Gabriela S. Silva, Luís P.S. Santos, Juan Andrés, Eloisa Cordoncillo, E. Longo Keywords: Ag2CrO4; Order-disorder effects; Electron beam irradiation; Density-functional-theory Abstract: Ag2CrO4 microcrystals were synthesized using the co-precipitation method. These […]

Writers: Lorena Athie Goulart and Lucia Helena Mascaro Keywords: Multi-walled carbon nanotubes; Nickel oxide nanoparticles; Phenolics; Electrodeposition; Simultaneous determination Abstract: This work reports the electrochemical determination of bisphenol A (BPA), hydroquinone (HQ) and catechol (CC) using glassy carbon […]

Writers: Coletta, Vitor C. and Marcos, Francielle C. F. and Nogueira, Francisco G. E. and Bernardi, Maria I. B. and Michalowicz, Alain and Goncalves, Renato V. and Assaf, Elisabete M. and Mastelaro, Valmor R. Keywords: […]

Writers: Elson Longo, Waldir Avansi Jr., Jefferson Bettini, Juan Andrés & Lourdes Gracia Keywords: nanocrystal; Microscopy; nanomaterials Abstract: The study of the interaction of electron irradiation with matter and the response of the material to the passage of electrons is […]

Writers: Francisco Wirley Paulino Ribeiro and Francisco Willian de Souza Lucas and Lucia H. Mascaro and Simone Morais and Paulo Naftali da Silva Casciano and Pedro de Lima-Neto and Adriana N. Correia Keywords: Multiwalled carbon nanotubes; metal […]

Writers: Renata L. Sala and Tatielih P. Oliveira Xavier and Tiago Venâncio and Tatiane Moraes Arantes and Caio M. Paranhos and Emerson R. Camargo Keywords: Polymer–matrix composites; Thermomechanical properties; Solid state Abstract: Distinct affinities between the organic and […]

Writers: E.C. dos Santos; D.C. Freitas and I. Fier; J.C. Fernandes; M.A. Continentino; A.J.A. de Oliveira and L. Walmsley Keywords: A. Ludwigites; D. NDR; D. Joule heating; D. Charge order depinning; D. Oscillations Abstract: I–V curves showing negative differential resistance (NDR) are […]

Writers: A.A. Felix, E. Longo, J.A. Varela, M.O. Orlandi Keywords: CaCu3Ti4O12; Thin film; Conductivity; Gas sensing; Thermopower measurement Abstract: In this work, CaCu3Ti4O12 (CCTO) thin films were synthesized with the polymeric precursor method and characterized […]

Writers: M.T.S. Tavares and M.M. Melo and V.D. Araújo and R.L. Tranquilin and C.R.R. Almeida and C.A. Paskocimas and M.R.D. Bomio and E. Longo and F.V. Motta Keywords: CaIn2O4; Ultrasonic spray pyrolysis; Nanocrystals; Photocatalysis; Photoluminescence; White-light Abstract: CaIn2O4 […]

Writers: AMARAL, Thiago Martins; ANTONELLI, Eduardo; OCHOA, Diego Alejandro; GARCÍA, José Eduardo; HERNANDES, Antônio Carlos Keywords: A. Sintering; Barium titanate; Layered ceramics; Dielectric; Ferroelectric and piezoelectric properties Abstract: The dielectric, pyroelectric and ferroelectric properties of bilayered BaTiO3/BaTi0.8Zr0.2O3 ceramics […]

Writers: S. Thirumalairajan and Valmor R. Mastelaro Keywords: CuAlO2; Hydrothermal; Self assembly; Microspheres; Toxic gas; XAS Abstract: Abstract In this paper, novel organic pollutants gas sensing material CuAlO2 microspheres constituted of nanoparticles were successfully prepared […]

Writers: R. Gonçalves and A.A. Correa and R. Pereira and E.C. Pereira Keywords: poly(3-hexylthiophene); impedance spectroscopy; electrochemical aging; electrochemical degradation Abstract: In this paper, the electrochemical ageing of poly(3-hexilthiophene) was studied using two different films electrodeposited under different […]

Writers: M.G.A. Ranieri and M. Cilense and E.C. Aguiar and C.C. Silva and A.Z. Simões and E. Longo Keywords: A. Ceramics; B. Chemical syntheses; B. Thin films; C. X-ray diffraction Abstract: Perovskite structured oxides are important functional materials often used […]

Writers: Wania Ap. Christinelli and Roger Gonçalves and Ernesto C. Pereira Keywords: Conducting polymers; Supercapacitors; Layer-by-layer films; Self-doping Abstract: Here we report supercapacitors fabricated with the layer-by-layer (LBL) technique using two polymers, namely poly(o-methoxyaniline) (POMA) and poly(3-thiophene acetic […]

Writers: Naiara L. Marana, Anderson R. Albuquerque, Felipe A. La Porta, Elson Longo, Julio R. Sambrano Keywords: ZnO nanotubes; DFT; Strain energy Abstract: Periodic density functional theory calculations with the B3LYP hybrid functional and all-electron […]

Writers: Ivo M. Pinatti and Tatiana M. Mazzo and Rosana F. Gonçalves and José A. Varela and Elson Longo and Ieda L.V. Rosa Keywords: Hydrothermal Microwave; Calcium titanate; Samarium; Photoluminescence Abstract: Calcium titanate (CaTiO3 – CT) and samarium […]

Writers: Tiago G. Conti; Adenilson J. Chiquito and Edson R. Leite Keywords: Films; Electrical properties; nanocrystals Abstract: In the present work, we are investigating the electronic transport mechanism for antimony-doped tin oxide (ATO) ultrathin films produced by a colloidal deposition process […]

Writers: Roman Alvarez Roca and Pablo S. Lemos and Juan Andrés and Elson Longo Keywords: nanoparticles; metastable; microcrystals; electron irradiation Abstract: In the present work, an easy precipitation method without presence of surfactants is applied to the synthesis of the hexagonal […]

Writers: F. B. Destro, M. Cilense, M. P. Nascimento, F. González Garcia, L. R. O. Heina, and A. Z. Simões Keywords: films Abstract: This study examines the effect of film thickness ranging from 230 to 404 nm […]

Writers: M M Ferrer, A F Gouveia, L Gracia, E Longo and J Andrés Keywords: morphology, Wulff construction, surface energy, Co3O4, α-Fe2O3, In2O3 Abstract: Essentially, the exposed crystal planes of a given material, which primarily determine their morphology, tremendously […]

Writers: M.D.P. Silva and R.F. Gonçalves and I.C. Nogueira and V.M. Longo and L. Mondoni and M.G. Moron and Y.V. Santana and E. Longo Keywords: Ag2WO4; Ag2MoO4; Photoluminescence; Morphology; Raman spectroscopy Abstract: Ag2W1 -xMoxO4 (x = 0.0 and 0.50) powders were […]

Writers: HERRERA, A.; FERNANDES, R. G.; CAMARGO, Andrea Simone Stucchi de; HERNANDES, Antonio Carlos; BUCHNER, S.; JACINTO, C.; BALZARETTI, N. M. Keywords: Photoluminescence; oxide; glass Abstract: A highly transparent Sm3+ glass with composition B2O3–PbO–Bi2O3–GeO2 was obtained by the traditional […]

Writers: Marcelo Moizinho Oliveira , Pedro Alberto Pavão Pessoa, Ronilson Lopes Brito, José Hilton Gomes Rangel, Jomar Sales Vasconcelos, Elson Longo. Keywords: electrical properties; WO3; varistors Resumo: Varistores são elementos que fazem parte do sistema de transmissão e distribuição de energia elétrica ou de […]

Writers: Lorena Athie Goulart and Fernando Cruz de Moraes and Lucia Helena Mascaro Keywords: Acid treatment; Bisphenol A; Multi-walled carbon nanotubes; Electrochemical sensor Abstract: Different methods of functionalisation and the influence of the multi-walled carbon nanotube sizes were […]

Writers: Hugo Menezes do Nascimento Vasconcelos, Mahmoud Eddrief, Yunlin Zheng, Dominique Demaille, Sarah Hidki, Emiliano Fonda, Anastasiia Novikova, Jun Fujii, Piero Torelli, Benjamin Rache Salles, Ivana Vobornik, Giancarlo Panaccione, Adilson Jesus Aparecido de Oliveira, Massimiliano Marangolo, […]

Writers: Lima, A. E. B., Luz, G. E., Batista, N. C., Longo, E., Cavalcante, L. S., Santos, R. S. Keywords: Amperometric Sensor; Gold microelectrode array; Ethambutol Abstract: In this paper, gold microelectrode array (Au-MEA) were employed to […]

Writers: Maria Suely Costa da Câmara, Lidiane Alves Pimentel, Elson Longo, Luciano da Nobrega Azevedo, Dulce Maria de Araújo Melo Keywords: Espinela; Li2CoTi3O8; Pigmento inorgánico; Método Pechini; Nanométrico; Spinel; Li2CoTi3O8; Inorganic pigment; Pechini method; Nanometer […]

Writers: L. F. Goncalves; L. S. R. Rocha; C. C. Silva; J. A. Cortés; M. A. Ramirez; A. Z. Simões Keywords: films; Dielectric properties Abstract: Bi3NbO7 (BNO) thin films were deposited on Pt/TiO2/SiO2/Si (100) and LaNiO3 bottom electrode substrates at room temperature from the polymeric precursor method. X-ray powder diffraction was used to […]

Writers: Paulo A. Raymundo-Pereira; Ana C. V. Mascarenhas; Marcos F. S. Teixeira Keywords: Biosensor; Electrochemical Abstract: The mediation of electron-transfer by oxo-bridged dinuclear ruthenium ammine [(bpy)2(NH3)RuIII(µ-O)RuIII(NH3)(bpy)2]4+ for the oxidation of glucose was investigated by cyclic voltammetry. These ruthenium (III) […]

Writers: M.D.P. Silva, R.F. Gonçalves, I.C. Nogueira, V.M. Longo, L. Mondoni, M.G. Moron, Y.V. Santana, E. Longo Keywords: Ag2WO4; Ag2MoO4; Photoluminescence; Morphology; Raman spectroscopy Abstract: Ag2W1 -xMoxO4 (x = 0.0 and 0.50) powders were synthesized […]